A 250-ML Sample of 0

question 41

Multiple Choice

A 25.0-mL sample of 0.10 M C₂H₃NH₂ (ethylamine) is titrated with 0.15 M HCl. What is the pH of the solution after 9.00 mL of acid have been added to the amine? K_b = 6.5 × 10⁻⁴

• A)11.08
• B)10.88
• C)10.74
• D)10.55
• E)10.49

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Definitions:

Clotting Factors

Proteins in the blood plasma that work in conjunction with platelets to stop bleeding by forming clots.

Antibodies

Immune system-generated proteins that recognize and neutralize invaders such as bacteria and viruses.

Proteins

Large, complex molecules essential for the structure, function, and regulation of the body's cells, tissues, and organs.

Plasma Membrane

The lipid bilayer membrane that surrounds a cell, controlling the movement of substances in and out of the cell.